<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <!-- 导入vue.js -->
    <script src="vue.js"></script>
    <!-- 导入elementui的css及js -->
    <link rel="stylesheet" href="../plugins/elementui/index.css">
    <script src="../plugins/elementui/index.js"></script>



</head>
<body>

    <div id="app">
        <el-menu
                default-active="2"
                class="el-menu-vertical-demo"
                @open="handleOpen"
                @close="handleClose">
            <el-submenu index="1">
                <template slot="title">
                    <i class="el-icon-location"></i>
                    <span>导航一</span>
                </template>
                <el-menu-item-group>
                    <template slot="title">分组一</template>
                    <el-menu-item index="1-1">选项1</el-menu-item>
                    <el-menu-item index="1-2">选项2</el-menu-item>
                </el-menu-item-group>
                <el-menu-item-group title="分组2">
                    <el-menu-item index="1-3">选项3</el-menu-item>
                </el-menu-item-group>
                <el-submenu index="1-4">
                    <template slot="title">选项4</template>
                    <el-menu-item index="1-4-1">选项1</el-menu-item>
                </el-submenu>
            </el-submenu>
            <el-menu-item index="2">
                <i class="el-icon-menu"></i>
                <span slot="title">导航二</span>
            </el-menu-item>
            <el-menu-item index="3" disabled>
                <i class="el-icon-document"></i>
                <span slot="title">导航三</span>
            </el-menu-item>
            <el-menu-item index="4">
                <i class="el-icon-setting"></i>
                <span slot="title">导航四</span>
            </el-menu-item>
        </el-menu>
    </div>

</body>
<script>
    new Vue({
        el : "#app",
        data() {
            return {

            };
        },
        methods: {
            handleOpen(key, keyPath) {
                console.log(key);
                //console.log( keyPath);
            },
            handleClose(key, keyPath) {
                //console.log(key);
                console.log(keyPath);
            }
        }
    });
</script>

</html>